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;*****************************************************************************
;* x86-optimized functions for eq filter
;*
;* Original MPlayer filters by Richard Felker.
;*
;* This file is part of FFmpeg.
;*
;* FFmpeg is free software; you can redistribute it and/or modify
;* it under the terms of the GNU General Public License as published by
;* the Free Software Foundation; either version 2 of the License, or
;* (at your option) any later version.
;*
;* FFmpeg is distributed in the hope that it will be useful,
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;* GNU General Public License for more details.
;*
;* You should have received a copy of the GNU General Public License along
;* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
;* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
;*****************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION .text
INIT_XMM sse2
cglobal process_one_line, 5, 7, 5, src, dst, contrast, brightness, w
movd m3, contrastd
movd m4, brightnessd
movsx r5d, contrastw
movsx r6d, brightnessw
SPLATW m3, m3, 0
SPLATW m4, m4, 0
DEFINE_ARGS src, dst, tmp, scalar, w
xor tmpd, tmpd
pxor m0, m0
pxor m1, m1
mov scalard, wd
and scalard, mmsize-1
sar wd, 4
cmp wd, 1
jl .loop1
.loop0:
movu m1, [srcq]
mova m2, m1
punpcklbw m1, m0
punpckhbw m2, m0
psllw m1, 4
psllw m2, 4
pmulhw m1, m3
pmulhw m2, m3
paddw m1, m4
paddw m2, m4
packuswb m1, m2
movu [dstq], m1
add srcq, mmsize
add dstq, mmsize
sub wd, 1
cmp wd, 0
jne .loop0
.loop1:
cmp scalard, 0
je .end
movzx tmpd, byte [srcq]
imul tmpd, r5d
sar tmpd, 12
add tmpd, r6d
movd m1, tmpd
packuswb m1, m0
movd tmpd, m1
mov [dstq], tmpb
inc srcq
inc dstq
dec scalard
jmp .loop1
.end:
RET
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